Jiajia Li
Soochow University (Suzhou)
Radical polymerizationChain transferAtom-transfer radical-polymerizationMolar mass distributionCopolymerLiving cationic polymerizationCatalysisMonomerHalideCationic polymerizationChemistryPolymer chemistryMaterials scienceVinyl acetateButyl acrylateVinyl etherReversible addition-fragmentation chain-transfer polymerizationPolymerizationPolymerManganesePhotodissociationPhotochemistryIonic polymerizationLiving free-radical polymerizationRaft
13Publications
6H-index
84Citations
Publications 14
Newest
#1Bowen Zhao (Soochow University (Suzhou))
#2Jiajia Li (Soochow University (Suzhou))H-Index: 6
Last. Jian Zhu (Soochow University (Suzhou))H-Index: 40
view all 6 authors...
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#1Mengmeng Zhang (Soochow University (Suzhou))H-Index: 2
#2Jiajia Li (Soochow University (Suzhou))H-Index: 6
Last. Jian Zhu (Soochow University (Suzhou))H-Index: 40
view all 6 authors...
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#1Miao Chen (Soochow University (Suzhou))H-Index: 1
#2Jiajia Li (Soochow University (Suzhou))H-Index: 6
Last. Jian Zhu (Soochow University (Suzhou))H-Index: 40
view all 7 authors...
Polymer molecular weight distribution (MWD) is a key parameter of polymers. Here we present a robust method for controlling polymer MWD in controlled cationic polymerizations. A latent mediator strategy was designed and combined with temporal programming to regenerate mediators at different times during polymerization. Both the breadths and shapes of MWD curves were tuned easily by adjusting an external light source. Bimodal, trimodal and tetramodal distributions were obtained, and the breadths ...
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#1Jiajia LiH-Index: 6
#2Andrew KerrH-Index: 6
Last. Sébastien PerrierH-Index: 69
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We present a robust manganese-catalyzed cationic reversible addition–fragmentation chain transfer (RAFT) polymerization induced by visible light. Well-defined poly(vinyl ether)s with controlled mol...
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#1Xia LinH-Index: 2
#2Jiajia LiH-Index: 6
Last. Xiulin Zhu (Soochow University (Suzhou))H-Index: 60
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We present a living cationic polymerization of vinyl ethers utilizing electrophilic selenium reagents as initiators and pentacarbonylbromomanganese (Mn(CO)5Br) as the catalyst. The polymerization could be carried out under ambient conditions, i.e. no strict purification of reagents, non-inert atmosphere and room temperature. Poly(vinyl ether)s were obtained with controlled molecular weights while maintaining narrow molecular weight distributions (Đ < 1.2). In this way, different selenium-contain...
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#1Qilong Li (Soochow University (Suzhou))H-Index: 4
#2Shaoxiang Liu (Soochow University (Suzhou))H-Index: 3
Last. Xiulin Zhu (Soochow University (Suzhou))H-Index: 60
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Pendant selenium-containing maleimide polymers with different selenium contents are synthesized via a radical copolymerization of styrene and N-butylmaleimide phenyl selenide. The polymer structures are characterized by nuclear magnetic resonance, gel permeation chromatography, Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, and scanning electron microscopy with an energy-dispersive spectrometer, which results in the desired structures and selenium contents. The refrac...
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#5Wei Zhang (Soochow University (Suzhou))H-Index: 55
A near-infrared (NIR) light induced controlled cationic polymerization is presented here. The halide abstraction reaction between the cyclopentadienyl iron dicarbonyl dimer (Fe2(Cp)2(CO)4) and an o...
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#1Jiajia Li (Soochow University (Suzhou))H-Index: 6
#2Andrew Kerr (Warw.: University of Warwick)H-Index: 6
Last. Jian Zhu (Soochow University (Suzhou))H-Index: 40
view all 9 authors...
The manganese carbonyl induced cationic reversible addition-fragmentation chain transfer (C-RAFT) polymerization under mild conditions such as visible light, room temperature and even in the presence of small quantities of water is reported. In this method, halide abstraction reaction between organic halide and manganese carbonyl is used to generate the oxidant and initiate radicals. The C-RAFT agents are generated in-situ from radical transfer reactions between vinyl ethers and three traditiona...
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#1Jiajia Li (Soochow University (Suzhou))H-Index: 6
#2Mengmeng Zhang (Soochow University (Suzhou))H-Index: 2
Last. Xiulin Zhu (Soochow University (Suzhou))H-Index: 60
view all 4 authors...
The direct photolysis of reversible addition fragmentation chain transfer (RAFT) agents under visible light was demonstrated by electron spin resonance (ESR) using 5,5-dimethyl-1-pyrroline N-oxide as a typical spin trap. The hyperfine coupling lines obtained by ESR spectroscopy showed the successful capture of the carbon-centered and the sulfur-centered radical. Photo-polymerization of vinyl acetate under different wavelengths was performed to verify the effects of wavelength on the process. The...
Source
#1Jiajia Li (Soochow University (Suzhou))H-Index: 6
#2Mengmeng Zhang (Soochow University (Suzhou))H-Index: 2
Last. Xiulin Zhu (Soochow University (Suzhou))H-Index: 60
view all 7 authors...
A robust method for preparing controlled poly(vinyl ethers) utilizing commercially available reagents under visible light is reported. Pentacarbonylbromomanganese (Mn(CO)5Br), generated from the conventional photolysis of manganese carbonyl and halide abstraction, is considered as a catalyst to oxidize carbon radical to carbenium ion in this polymerization. Polymerization behavior including the effects of solvents and monomers have been investigated.
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